Digestive System: Questions And Answers

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1. Which components of the digestive system are GI tract organs, and which are accessory digestive organs?

The GI tract organs includes; The mouth, pharynx, esophagus, stomach, small intestine, and large intestine.

The accessory digestive organs include; The tongue, teeth, salivary glands, liver, gall bladder, and the pancreas

2. Which organs of the digestive system come in contact with food, and what are some of their digestive functions?
Mouth is used for ingestion of food. Saliva produced by salivary glands, helps in the early digestion of carbohydrate and fat by enzymes amylase and lipase.
Pharynx helps in muscular propulsion of food into the esophagus
Esophagus help transport food to the stomach (peristalsis)
Stomach help to chemically breakdown food via production of gastric juice.
…show more content…
Esophagus helps secrete mucus and they transport food to the stomach (peristalsis)

16. What are the functions of the upper and lower esophageal sphincters?

The functions of the upper esophageal sphincter (UES) is to control the movement of food from the pharynx into the esophagus.
The functions of the lower esophageal sphincter (LES) is to control the movement of food from the esophagus to the stomach.

17. What does deglutition mean?
Deglutition means swallowing.

18. What occurs during the voluntary and pharyngeal phases of swallowing?

Voluntary or oral phase of swallowing is the passage of the bolus into the oropharynx. It is voluntary.

Pharyngeal phase of swallowing is the passage of bolus through pharynx into the esophagus. It is involuntary.

19. Does peristalsis “push” or “pull” food along the gastrointestinal tract?

Peristalsis push food along the gastrointestinal tract
20. Compare the epithelium of the esophagus with that of the stomach. How is each adapted to the function of the organ?

21. What is the importance of rugae, surface mucous cells, mucous neck cells, chief cells, parietal cells, and G cells in the

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